Fuel-mixture vaporizing and heating device



W. W; GRANT. FUEL MIXTUREYAPORIZING AND HEATING DEVICE.

APPLICATION FILED MAR. 28. 1919.

,359,983. Patented Nov. 23, 1920.

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filial-lacy v UNITED STATES PATENT QFFI'CE.

WILLIAK WALLACE GRANT, or. BROOKLYN, nnw roan runnmxmn varomzme AND'HE'ATING DEVICE.

To all whom it may concern:

Be it known that I, WILLIAM 'WALLAoE GRANT, citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain newv and useful Improvements in Fuel-Mixture Vaporizing and Heating Devices, of which the following is a specification.

This invention relates to an improved, fuel mixture vaporizing and heating device for internal combustion engines and has asone of its principal objects to provide a device ofv this character which may be interposed at any suitable point in the path of flow of fuel mixture from an engine carbureter to the engine for effectively vaporizing all of the fuel of the mixture and heating the mixturn to accordingly increase its combustibility and potential energy.

The invention has as a further object to provide a device of this character employing an electric resistor as a heating element and wherein a maximum heating effect upon the fuel mixture will be had from said element.

And the invention has as a still further object to provide heat diffusing elements in connection with the resistor and wherein the fuel mixture will be caused to flow over and around said elements to be effectually heated thereby.

Other and incidental objects will appear hereinafter. In the drawings:

Figure 1 is a view of my improved device showing parts in elevatlon and parts in Section,

Fig. 2 is a transverse sectional view taken through the device, and

F'g. 3 is a perspective view showing the heating mechanism of the device in detail.

In carryin the invention intoefi'ect I employ apre erably cylindrical metal shell or fuel mixture conductor 10 adapted to be interposed in the connection between an en- Specification of LettersPatent.

Patented Nov. 23, 1920.

Application fled larch 28,1919. pserial-No. 285,785.

through and between adjacent slots with notches, both the slots and notches opening through the periphery of the plate. Preferably, the slots and notches of each successive plate are staggered with respect to-the slots and notches of the preceding plate and, as will be clear, these plates serve partitions dividing the shell into a plurality of heating compartments, Formed on the side faces ofthe plates is a plurality of heat radiating lugs or spurs 14 andexten-ding hehcally around the casing 12. are

spaced heat radiating fins 15. Closing the casingat its ends are removable caps 16 from which extend arms 17 riveted or otherwise secured to the wall of the shell for rigidly connecting the casing therewith as .Well as holding the end caps upon the casing.

Fitting snugly within the casing 12 is a lining of mica or other approved insulating material 18 andsurrounded by this. lining is a resistor 19. I Thisresistor may, as shown in thedrawings, be, formed from. a length of suitable resistance wire bent to provide a coil or may be of any other approved type and, as particularly illustratedv in Fig. 1, the resistor is embedded within a preferably insulating filler 2O containedwithin the casing and supporting the resistor toextend axially therein. Projecting from the casing adjacent its ends are tubular terminals 21 embedded .at their inner end portions within the filler 20and provided with oblong heads The heads 22'areformed with grooves in which the/ends of the resistor are electrically engaged. Received through the shell 10 and threaded at their innerends into the terini-. nals 21, are binding screws 23. Thesebinding screwsjare freely fitted through thimbles Q4insulating the binding screws with respect to the shell and overlying said thimbles are washers 25 around the binding screws.

' As will now be clear, suitable conductors may, as shown in the drawings, be connect- ,ed with the binding screws for including the resistor 19 in'circuit with a suitable source of electrical energy A rheo'stat, conventionally; illustrated at 26, is preferabl included in this circuit. The purpose 0 ;this rheosta't' will be self evident. Thus, when the circuit through the resistor is closed, the resistor will, of course, be heated, when the heat from said resistor will be radiated t a ,2: her i ew. h difiusion plates of a plates 13, the lugs 14 and the fins 15. Consequently, a relatively large area of heated metal surface will be presented to the fuel I mixture currents flowing through the shell.

' ture currents will then, in a similar manner.

flow through the next diffusion plate into the succeeding heating chamber and from this heating chamber through the final diflusion plate to then be carried to the cylinder of the engine. Thus, the fuel mixture will be caused to flow through and around the diffusion plates as well as through the heating chambers within the shell so that the fuel of the mixture will be effectually vaporized and the mixture thoroughly heated. The combustibility of the fuel mixture will accordingly be materially increased and its effectiveness accordingly enhanced, In this connection, it is to be observed that since the slots and openings of the suceeding diffusion plates are staggered with respect to each other, the currents of fuel mixture flowing through the device will be caused to take a circuitous course. Furthermore, the helical fins 15 around the casing 12 will tend to impart a whirling motion to the fuel mixture currents. Thus, the device will, simultaneously with the heating of the mixture, act to thoroughly commingle the atoms of the mixture so that a heated homogenized fuel supply will issue from the device. 7

In the drawings, I have shown the heating mechanism of the invention inclosed within an individual shell therefor. However, as will be at once appreciated, this heating mechanism could well be interposed directly in the discharge pipe of a carbureter or directly in an engine intake manifold. Further, the slots and notches in the heat diffuslon plates 13, may, if desired, terminate short of the peripheral edges of said plates while the lugs 14: and fins 15 could, if deemed expedient, be omitted. Heating greater or lesser number than shown may be employed. The heating c0mpartments, when so desired, may be omitted and replaced by heating plates of the character described; in which event, instead of multiplicity of heating plates, for heat diffusion, the heat difi'using member may consist of an undivided whole, with the slots and notches therewith correspondingl continuous and undivided. Thus, while have llustrated the invention in all'of its details, 1t w1ll be clear that various minor changes,

such as indicated, ma be made without departing from the spirit of the invention and I, therefore, reserve the ri ht to make all such chan es as fall within the scope of the appended claims.

Having thus described the inwution, what is claimed as new is:

1. In a device of the character described, a shell having a passage therethrough, a closed metallic casing having integral heat radiating bafl'les fitting the wall of the shell for supporting the casing within said assage, said baffles dividing the passage into heating compartments and each having a series of radial slots therethrough establishing communication between said compartments, a resistor housed withinthe casing, and a filler of insulating material within the casing embedding said resistor.

2. A fuel vaporizer and heating device for internal combustion engines including a shell having a passage therethrough, a

closed tubular casing supported within said passage and provided between its ends with a radial annular bafile fitting the wall of the shell and slotted to form a plurality of heat radiating segments, a filler within the easing, and a resistor embedded in said filler. 3. A fuel vaporizer and heating device for internal combustion engines including a shell having a passage therethrough, alon gitudinally disposed casing arranged within the passage and provided with an integral heat radiating baffle snugly fitting the wall of the shell for centering the casing within the passage, said baffle being provided with a plurality of lateral heat radiating lugs, and a resistor disposed within the casing.

it. A l'ue] vaporizer and heating device for internal combustion engines including a shell having a passage therethrough, a longitudinally disposed casing mounted within the passage and provided with an integral heat radiating baflle extending toward the wall of the shell, the casing being further formed with a series of external heat radiat ing fins extending helically about the casing, and a resistor disposed within the casing.

5. A fuel vaporizer and heating device for internal combustion engines including a shell having a passage therethrough, a bafile located within said passage to extend transversely thereof, a casing integral with the baffle extending longitudinally within said passage and axially through the bafile, the baflle being provided with a multiplicity of slots extending radially from the casing through the periphery of the bafile, the peripheral parts of the bafiie between the slots being in close fitting engagement with the wall of said passage, and means within the casing for heating the bafiie.

6. In a device of the character described, the combination of a shell, a tubular casing disposed axially of the shell and provided between its ends with spaced annular baffles lying transversely within the shell, and a resistor disposed within the casing.

7. In a device of the character described,

5 the combination of a shell, a casing extending longitudinally of the shell axially thereof and having spaced integral annular baffles extending radially therefrom and abutting the wall of the shell, a resistor disposed Within the casing, and a filler embedding 10 the resistor and contained by the casing.

In testimony whereof I aflix my signature.

WILLIAM WALLACE GRANT. [L. 8.] 

